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F. J.- LAU. LOCK rgn B'AG FRAMES. APPLICATION min MAY 2. m1.

Patented. Dec. 9,1919.

nueuroz Fwdeflh/allau $3M 61170411441 vi a M rn nnIcK alien, orwATEaizUnY, oonnnoricor; essrenoa 'ro WoRoEs'rER METAL oons COMPANY, orsnnnr'on, ooivnnorion'r, A o'oaronn'rion or To all whom it may concern:

Be it known that I, FnnnRIoKJ. LAU, a citizen of the United States,residingat the city of Waterbury, in the county of New Haven and Stateof Connecticut, have 1nvented a certainnew and useful Improvement inLooks for. Bag-Frames, of which the followingis a specification.

My invention relates to locks or fasteners generally, but ismoreparticularly applicable to the type oflock disclosed in the LettersPatent No. 1,005,850, granted to me October 17 1911, for locks for bagframes and the like.

The principal object of my invention. is

toconstruct ailoolr in its ,entiretyin which the number of movingpartsis reduced to .a minimum and which can be assembled by hand therebydispensing with the employment or the usual assembling. machinery. Afurther object istoiprovide .detailparts and mechanism for looks orfasteners which are not only applicable to the lock disclosed herein butalso to" looks or fastenersgenerally.

I attain these and other objects of my invention in the'mechanism setforthiin the following description and accompanying drawings inwhichllke reference characters refer to corresponding parts. In thedrawings: a j Figure 1 is a back view of the lock in position onone ofthe swinging members of the'bag frame; ii a a a Fig. '2, a similarviewbut showing the bolt depressed 1:0 release the hasps whichare'atta'checl to the-opposite swinging mem- Fig. 3, an enlargedperspect' e view of the lock'casing; j

1 Figs. 1 and 5, enlargedperspective views of the bolt and tumblerrespectively, and

Fig. 6, an enlarged perspective View of the springs. l

Referring now to theseveral figures of the drawing, the casing 1 issuitably bent up'out of a singlepiece of sheet metal so that its bodyportion .fcrmsthefront'wall 2 and its edge portions the bottom wall 3,end walls 4, 4 and top wall 5. The casing thus formed isabox-like-structure having its rear side open as shown in-Fig. 3.Thetopiwall 5.is cut-.:away inidWa-yof its ex-' ti-emities toformjare'cesshaving end edges 6, 6 and anin'ner edge 7. The portionofriveting operation.

. slots 21, 21

i the projecting lugs .23,

MASSACHUSETTS.

LOCK non mean ime.

Specification of Letters Patent. Patented Dec. 9 .1919. Applicationfiled. May 2, 1917. Serial No. 166,040.

the top wall 5 beyond this recess toward the front wall12 may if'desiredbe furthercut away leaving lugs 8 8. The front wall 2 is provided .witha pair-of hasp-receiving slots 9, 9, and the bottom wall 3 is suitablyupset to form the V-shaped projections 10 10, one of which islocatednear each extremity. Midway of the bottom" wall 3 between theseprojections is formed the aperture 11. A guide post 12 having its baseenlarged to form a shoulder 13 is suitably secured to the bottom wall 3by passing its lower extremity 1% through the aperture 11 and upsettingit uponthe under side of the Wall 3 by a Movably mounted on the'post 12and bearing against the front wall 2 of the casing is a U-shaped bolt15. This bolt is suitably bent up out of a single piece of sheet metalto form the top and bottom plates 16 and lTwhichare spread apart andconnected at their rear edges by the verticalstruts 18, 18 The bottomplate 16 has its extremities bent upwardly to form the beveled haspposts 19,19 and its intermediate portion pierced to form an aperture 20through which the guide post 12 eX- tends. .The top plate 17 is providedwith adjacent to its extremities'anda keyhole 22 midway of itsextremities. The fronted e of thebottom plate 16 is cut away formingrecesses for the tumbler but leaving -Mounted on the top plate'l? is aferrule 25 having downwardly projecting lugs 26, 26 which latter passthrough the slots 21, 21 and are clenched on the under face of the topplate 17 to fasten the ferrule to the bolt. The top of the ferrule isprovided with a keyhole 27 which registers witli the keyhole 22 in thetop plate 17. Movably mounted in the easing and bearing against thefront and'bottom walls 2 and 3*is an L-shaped tumbler 28. This tumbleris bent up out of a single piece of sheet metal to form the front plate29 and the bottom plate The front plate 29 provided about midway of itsextremities with the upwardly projecting lug 31having a vertical keyslot 32, and ad jacent to or at. its extremities is further providedwith the upwardly projecting lugs 33, 33 which latter are considerablyshorter than the lug 31. The rear edge of thebottom plate 30 is cut awayat its middle aortion to form a recess havin end ed es i t) h bearsagainst the shoulder 13 on the guide post 12. The tumbler 28 is mountedto slide on the bottom plate 3 of the casing, its sliding being limitedby the edges 3a, 3 1: of the recess in its bottom plate abutting againstthe shoulder 13 at the base of the guide post. The bottom plate 30 isstruck up adjacent to its extremitiesto form the V-shaped projections36, 36 respectively, which present V-shaped pockets on the under side ofthe plate arranged to interlock with the Vshaped projections 10, 10 onthe bottom plate 3 when the tumbler is at rest in its variouspositions." The extremities of the bottom plate30 are bent upwardly toform the spring-bearing lugs 37, 37. Movably mounted on the guide post12 between the bottom plate 16 of the bolt and the bottom plate 30 ofthe tumbler are the blade springs'38 and 39 provided with apertures and41 respectively through which the guide post 12 extends. The upperspring 38 is shorter than the lower spring 39 which latter is longerthan the bottom plate 30 on the tumbler so that its extremities mayengage the upwardly turned lugs 37 37. These springs may be said to befloating since their. extremities slidably engage the oppositeplatesofthebolt and tumbler respectively and their middle portions,which are flexed. toward each other, ride on the guide post 12. j

To assemble the parts the L-shaped'tum-L bler 28 is fitted in to thecasing A in front of the guide post 12 so that its front and bottomwalls bear respectively against the front and bottom walls of thecasing. The springs 38 and 39 are then passed over the guide post sothat the extremities of the spring 39 rest upon the projections 37, 37on the tumbler. Then thebolt 15 having the ferrule 25 attached theretois passed downwardly in a forward direction through the recess in thetop plate 5 its bottom plate 16 passing overthe guide post 12 andbearing against the extremities of the spring 38.

' hen the bolt has been passed downwardly far enough so that its topplate 17 clears the recess it is then swung forwardly under the lugs 8,8 and against the front of the casing, the ferrule 25 passing into thecut away portion between the lugs 8, 8; In this'position theibolt isforced upwardly by the springs 38 and 39 so that the plate 17 becomesseated against the under side of the lugs 8, 8. The moving parts of thelockibeing thus assembled in the casing the latter is passed downwardlythrough an aperture in the top horizontal plate A. of the bag framemember which aperture fits around the casing. The open side of thecasing is now closed by the vertical plate of the bag frame member. Thelock is supported on the bag frame member by the edges of the top plate5 of the casing overlapping the edges of the aperture in the top plateA. An apertured escutcheon or retaining plate I) which is preferablyflanged around its outer periphry is then passed over the ferrule 25,and attached in any suitablemanner to the top plate A ofthe bag framemember. j The aperture in the retaining plate Z) fits around thefer'rule'25 and serves to guide the same in its vertical movement and toprevent the ferrule and bolt from becoming displaced.

'VVhen the lock is assembled as above described, the hasp posts 19,19011 the bolt15 extend across the hasprreceiving slots 9, 9 in thefront wall 2 of the casing so tha-t when the two swinging members of thebag frame are brought together the hasps; which are carried by theopposite swinging member (not shown) of the bag frame from that carryingthe lock, pass'through the. slots 9, 9 in the lock casing and enter intolocking engagement with the hasp posts 19, 19.

During this operation the bolt 15 is de-. pressed against the action ofthe springs 38 and 39 by the'action of the hasps riding over the bevelededges of the heap posts; I In this against the action of the springs 38and39,

thereby causing the hasp posts 319, ,19 to be lowered. out of engagementwith the hasps into the position shown in Fig. 2; Vi hen the pressure011 the ferrule is relieved the springs 38 and39 will force the boltback again to its normalposition as shown in Fig. 1, wherein thehasp'posts .19, '19 may again be engaged by the hasps'inthe manner abovedescribed; It should be noticed that during the above describedoperation, in which the device merely acts as a spring latch orIEEtStG116I',*tl16 tumbler performs no function and for this reasonif'desired can be eliminated and "an operative device constructedwithout it. When it is desired, however, to lock the bolt to prevent thehas-p posts from becoming disengaged from the 'posts and hasps may bemaintainedbyi moving the tumbler laterallyso {that the lugs 33, 33 onthe tumbler will come underthe lugs 23,24t on the bolt and lock thelatterjagainst any. downward movement. To throw or move the tumbler,into 1ts looking position the-key 42 is inserted downwardly through orupsets the tumbler laterally to its locking thekeyhole 27 in the ferruleand the keyhole 22 in the bolt so that its lower extremity passes downover the guide post. 12 and engages the bottom plate 16 of the bolt.When the key is turnedits bittQpasses into and engages one edge of theslot 32 andslides position; During the upsetting of the tumblerthe'walls ofthe pocketsformed by the V-shaped projections36, '36 on thebottom plate 30 rideover the corresponding V- shaped projections 10, 10onthe bottom wall 3 of the casing. The interlocking relation betweenthe" corresponding projections and pockets on the casing and tumbler 1sma1n tained when the latter is at rest by the down ward pressure ofthespring39: on the lugs 37 37 onthe tumbler. 13y turning thekey intheopp'osite direction its bit engages the opposite edge of-the slot 32and throwsthe tumbler backagain to its original position in which thelugs 33, 33on the tumbler are outof alinement with the lugs 23, 24 onthe bolt, which latter may again be depressed to i disengage the haspposts from their hasps The enlarged shoulder at the base of the 7 guidepost serves to {transmitthe strainsfto the face portionofjthe'bottomofthe casing and also reinforcesthe post against any tilting action.Since the post is of considerable length and performs both the functionof a guide and keypost it is necessarily subjected to more than theusual strain upon either an ordinary guide or key post of shorterlength. For this reason the reinforcing shoulder at the base of the postis a very important feature of my invention. It should be observed thatinforming the V-shaped projections upon the bottomof the casing I amthereby enabled to eliminate the usual separate platefor carrying theseprojections and by mounting the bolt upon a central key post I amthereby not only enabled to dispense with the usual guiding means at thelateral extremities of the bolt but also to make the .maximum width ofthe boltequalto the distance between the hasp lugs. Thls not only savesmetal but also makes a stronger bolt.

It should be noticed also that the shoulder j formed on the guide postbears against the inner edge of the recess in the base of the umblerthereby holding the tumbler against the front wall of the casing. Thelock may be quickly assembled since the gulde post 1s the sole means forholding the moving parts in position withinthe casing. I desire it to beunderstood, however, that while the guide post set forth hereinis'one ofthe important features of my invention yet the other features may beutilized without the employment of this guide post,and the device issusceptible to such'further modification as may fairly come within thescope of the appended claims.

able in the. casing and having means for engaging a hasp, a tumblerslidable in the casing, the said tumbler and easing eachhavingncoracting means formed thereon for holding the tumbler in itsrelative positions a-nd'thesaidbolt and tumbler having coacting meansfor holding the bolt against sliding movement or permitting it to slideaccordingto the position in which the tumbler is held, and a springdevice bearing on the bolt to holditin its normal position and bearingon :the tumbler to force the latter against the casing.

I 2. A lock comprising a casing havinga keyhole in its top wall and akey post erected on its bottom wall inalinement with said keyhole, abolt slidably mounted on said post provided with means for engaging ahasp, a tumbler slidably mounted within said casing and provided with anelongated recess through which said bolt extends, the said tumbler andeasing having coacting means for holding said tumbler in its relatlvepositions and the Said bolt andtuinbler having co-acting means'forlocking and 1L1I1- locking thebolt, and a springclevice bearing on theboltto hold. it in its locked position and bearing on the tumblertoforce the latter against the casing.

3. A look comprising a casing, a bolt slidably mounted within saidcasing, a tumbler slidably mounted in said casing, the said tumbler andcasing having co-acting means for holding the tumbler in its relativepositions and the said bolt and tumbler having co-acting means forlocking and unlocking the bolt, a blade spring having its extremitiesbearing on the bolt and a blade spring having its extremities bearing onthe tumbler, the said springs being vertically movbler slidably mountedin the casing, the said bolt and tumbler having co-acting means forlocking and unlocking the bolt and the said tumbler and casing havingco-acting means for holding the tumbler inits relative positions, andapair of centrally apertured blade springs movably mounted on said keypost, the said springs being bent in opposite directions so that theirextremities bear upon said bolt and tumbler respectively and theircentral portions bear upon each other.

5. A lock comprising a casing, a bolt slidably mounted in said casing, atumbler slidably mounted in said casing, the said tumbler and casinghaving co-acting means for locking and unlocking said bolt, V-shapedpockcasing and arranged to enter into engagement With said pockets, anda spring device bearing on said tumbler to force-said pockets intoengagement with the if-shaped projections on thecasing when the tumbleris upset.

6. In a fastening device a casing, a post and a support for said post,the said post having its base portion enlarged to form a shoulder whichbears against the front of said support inside of said casing and thesaid shoulder being provided with a rivet which passes through saidsupport and is upset on the under side thereof, in combination with anapertured hasp plate movably mounted on said post which latter extendsthrough said aperture in the'hasp plate.-

7. In a fastening device a casing having a guide post erected on one ofits inside walls, a hasp plate provided with hasp lugs spaced apart, thesaid hasp plate being apertured between said lugs and movably mounted onsaid guide post which latter extends through said aperture in said haspplate.

8. In a fastening device a casing having a guide post erected on one ofits inside Walls, an apertured bolt movably'mounted on said post and acentrally apertured blade spring also movably mounted on said post, sothat thelatter extends thronghsaid aperture, the

said spring being arranged to bearagainst post, the said bolt being,arranged to move against the action of said springs.

10. In a fastening device open-sided casing having a post erected on itsbottom Wall, a spring Within said casing and a bolt slidably mounted onsaid post andarranged to be depressed against the action ofsaid; spring,the said casing having the edge of its top Wall recessed leaving aportion of the Wall along one side :orfwsaid recess, the said recessbeing'of sufficient lengthto receive the bolta vhere'by the latter maybe insertedv laterally into'the recess and downwardly over the postagainst the action of said spring and seated against that portion of thetop Wall along the side ofsaid recess. y i i i In testimony whereof, Ihave hereunto set my hand this 24th day of April, I917. y

1 FREDRIQK'J, LAU.

